Reff?Effective reproduction number — average secondary infections per case. Above 1.0 means the epidemic is growing, below 1.0 means it's declining.0.00
Controls
Canvas Mode
Population
Agents ?Total number of agents in the simulation. Change takes effect on Reset.500
Agent Speed ?Base movement speed of all agents. Higher values mean faster spread but also faster escape from danger zones.1.5
Disease
R₀ ?Basic reproduction number — how many agents one infected agent will infect on average. Higher = more contagious. COVID ≈ 2–3, Measles ≈ 12–18.2.5
Mortality % ?Chance an infected agent dies instead of recovering when their infection timer runs out.3
Infection Duration ?How many ticks an agent stays infected before recovering or dying. Longer duration = more time to spread the disease.300
Infection Radius ?Distance (in pixels) at which an infected agent can transmit the disease to nearby susceptible agents.30
Vaccination
Zone Radius ?Size of vaccination zones placed on the canvas. Susceptible agents passing through are gradually vaccinated.60
Effectiveness % ?How effective the vaccine is. Higher values mean agents get immunized faster when inside a vaccination zone.90
Lockdown
Zone Radius ?Size of lockdown zones placed on the canvas. Agents inside move much slower, reducing contact.80
Speed Reduction % ?How much agent speed is reduced inside lockdown zones (or globally during lockdown). 90% means agents move at 10% of normal speed.90